While working in a factory in 1852, Elisha Otis and his sons came up with an elevator design that employed a safety device. A wooden frame at the top of the platform would snap out against the sides of the elevator shaft if the ropes broke, essentially functioning as a brake. Otis calle...
Social Construction of TechnologyElisha OtisEvolutionTechnologyNo particular individual invented the elevator. The modern elevator came to exist through a combination of evolutionary innovations. Mere mechanical parts weredoi:10.2139/ssrn.2141861Sam RysdykSocial Science Electronic Publishing...
A.Thompson builds an elevator for his cat. B.Thompson owns a cat that has thousands of fans. C.A cat with a special elevator lives a happy life. D.A pet lover has won the hearts of many people. 21.(10分)Scientists say they recently invented the world's tiniest remote﹣controlled rob...
By the mid 1800s, steam or water powered elevators were being produced for non passenger usage. Answer and Explanation: Elisha Otis invented the elevator brake. Before his invention, there was no mechanism to stop an elevator if a lift rope, cable, or chain broke. Eli......
Because of a recent physics experiment, the leftmost elevator has been contaminated with mercury. There is also some slight fire damage. Decontamination should be complete by 08:00 Friday. This ultimately got misinterpreted by some as being an actual experiment that ha...
结合句意,故填Who was it invented by? 【2】我的衬衫是棉质的。结合句意,故填My shirt is made of cotton. 【3】她不再害羞。结合句意,故填She is not shy anymore. 【4】我想知道我们应该下一步去哪里。结合句意,故填I wonder where we should go next. 【5】我认为泼水节是有趣的。I believe...
Who invented the crossbow? Who invented lithography? What year were crayons invented? Who invented the blender? Who invented the steam engine oil drill? Who invented the gasoline engine? Who invented the digital camera? Who invented the elevator?
This time, he's invented a lift to help his cat, Frodo, who is 20 years old and loves to sit in the poolside sun each day — despite the giant flight of stairs he has a little difficulty descending. Thompson created his own teeny custom elevator for Frodo, based on his backyard rolle...
C. elevator riders’ standing positions D. micro social status in the elevator小题2:The underlined word“it”in the first paragraph probably refers to“ ” A.an elevator B.the new research C.eye contact D.social status小题3:A person who stands in the back of the lift is probably A ...
I cannot recall a time I rode an elevator above eight stories in Austin, so I’m not an elevator expert. With that in mind, I have to wonder where is the innovation in elevators? I rode an express elevator in Chicago that only stopped at the top floor or bottom floor. That’s a ...